September 29, 2008

Winning The War Against Moisture

By: O'Brien, Sean M.

Abstract: Most architects, contractors, and building owners know a primary cause of building damage is exposure to water, and that as long as materials and systems are kept dry, the risk of damage is relatively low. However, there are several...

August 30, 2008

Assessment and Evaluation of Existing Structures by Means of In-Situ Load Testing and Structural Monitoring [Editorial]

The primary goals of any structural investigation are to establish the existing condition of the structure; identify issues affecting the structural performance; and develop and implement any remedial actions required.  When conducting a...

August 30, 2008

New Rules for Evaluating Seismic Performance of Prefabricated Shear Panels

Abstract: Structural engineers are increasingly specifying prefabricated shear panels when designing light-frame wood and steel buildings. As architectural designs call for more window and door openings, prefabricated products provide a solution...

August 30, 2008

In-situ evaluation of two concrete slab systems, I : Load determination and loading procedure

By: Gustavo Tumialan, Galati, Nestore, Nanni, Antonio, Ziehl, Paul H.

Abstract: The primary objective of in-situ load testing is to assess the safety and serviceability of an existing structural system with respect to a particular load effect. At this time, the most appropriate loading level and procedure, as well...

August 30, 2008

In-situ evaluation of two concrete slab systems, II : Evaluation criteria and outcomes

By: Gustavo Tumialan, Galati, Nestore, Nanni, Antonio, Ziehl, Paul H.

Abstract: The primary objective of in-situ load testing is to evaluate the safety and serviceability of an existing structural system with respect to a particular load condition and effect. In light of technological advances in construction...

July 30, 2008

Full Potential

Abstract: The steel industry has plenty of opportunites to be the most it can be from a sustainability standpoint.

June 29, 2008

On the Grid

Abstract: Seismic isolators, sandwiched between two steel grids, separate an existing San Francisco building from its vertical addition.

June 29, 2008

The Effects of Thermal Bridging at Interface Conditions

By: Totten, Paul E., Sean OBrien, Pazera, Marcin

Abstract: Thermal bridging in buildings can contribute to a multitude of problems, including, but not limited to, added energy use during heating and cooling seasons and interior surface condensation problems.|Thermal bridges are discontinuities...

June 29, 2008

NSAR in Concrete Slabs

By: Craig P., Pinelle, Dennis J., Mauro Scali, Matthew Sherman

Over the years, we have had a number of call-backs on projects where our epoxy coating applications had developed fluid-filled blisters. When we had these problems investigated, we found that osmosis was most likely the...

June 29, 2008

The Beams Are Too Bouncy?

Abstract: If you practice structural engineering long enough, you will likely find your firm embroiled in a situation of controversy sooner or later. You may even be blamed as causing the problem. Our experience suggests when this happens, it...

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